The statement three times the sum of the opposite of a number and -7
is 3( - n - 7).
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, Three times the sum of the opposite of a number and -7.
Let the number be 'n' and its opposite number be '-n'.
This statement can be numerically represented as,
3( - n + (- 7)).
= 3( - n - 7).
= - 3n - 21.
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Please help me asap!!!!!!!!
Answer:
7/4 and 3/8.
Step-by-step explanation:
You can get this by dividing all possible answers, and if the decimal stops you have a terminating decimal.
5250 marked down 15%
Answer:
4462.5
need 20 characters
Answer:4462.5
Step-by-step explanation:multiply 5250 by 15% (or 0.15), then subtract that # to get the answer.
5250 x 15% = 787.5
5250-787.5= 4462.5
How many solutions exist for the given equation?
0.75(x + 40) = 0.35(x + 20) + 0.35(x + 20)
Answer:
0.35
Step-by-step explanation:
Answer:
Just one
Step-by-step explanation:
Got it right on Edge 2022
*20 points* 7x + 24 = 2x - 6 How many solutions?
Answer:
x= -6
Step-by-step explanation:
so i'm thinking 1 solution.
(let me know if i'm wrong)
Answer:
infinitely many solutions.
Step-by-step explanation:
If solving an equation yields a statement that is true for a single value for the variable, like x = 3, then the equation has one solution. If solving an equation yields a statement that is always true, like 3 = 3, then the equation has
Solve the inequality 5z+8≥-7
Answer:
z≥−3
Step-by-step explanation:
1 Subtract 88 from both sides.
5z≥−7−8
2 Simplify -7-8−7−8 to -15−15.
5z≥−15
3 Divide both sides by 55.
z≥− 15/5
4 Simplify 15/5 to 3
z≥−3
Marlena bought a car in 2010. As years passed, the value of the car decrease linearly, as shown in the table. What was the purchase price of the car in 2010, and how much does it decrease each year?
Answer:
B
Step-by-step explanation:
Difference between value as the years pass, ($22,050-$19,600 = $2,450)
To find purchase price: $22, 050 + $2,450 = $24,500
The sum of three numbers is 66. The second number is twice the first and six less than the third. find the numbers
Step-by-step explanation:
let the 1st number be x
and,
2nd number = 2x
3rd number = 2x + 6
their sum = 66
so, after inserting the values we got
→ x + 2x + 2x + 6 = 66
→ 5x + 6 = 66
→ 5x = 66 - 6 = 60
→ x = 60/5 = 12
→ x = 12
therefore,
1st number = x = 12
2nd number = 2x = 12 × 2 = 24
3rd number = 2x + 6 = 24 + 6 = 30
hope this answer helps you dear...take care and may u have a great day ahead!
-5x-9 is greater than or equal to -4
Answer x is less than or equal to -1
Step-by-step explanation:
-5x-9 -4
-5x-9+9 -4+9
-5x 5
-5x/-5x 5/-5
x less than or equal to -1
Answer:
x [tex]\leq[/tex] -1
Step-by-step explanation:
(-5x - 9) [tex]\geq[/tex] -4
add 9 to both sides of the equation
-5x-9 [tex]\geq[/tex] -4
+9 +9
--------------------
the -9 and +9 cancel out
-5x [tex]\geq[/tex] 5
then, divide both sides by -5 to get x
-5x [tex]\geq[/tex] 5
------ -------
-5 -5
x [tex]\leq[/tex] -1
by the way, the sign changed from [tex]\geq[/tex] to [tex]\leq[/tex] because we divided by a negative number to get x.
NEED HELP ASAP!!
What is the measure of the angle
Hey! The measure of the angle is 127
The angle is a total of 180 degrees.
We have to find the total of what's in between the two blue lines.
To make it easier, we can take the total of what's not in the blue lines, 53, and subtract it from 180. This gives us 127. So in between both the blue lines, measures 127. Or, you can just count up from 53 to 180 individually.
Express as a trinomial.
(2x – 4)(x + 8)
Answer:
[tex](2x - 4)(x + 8) \\ 2x - 4(x + 8) \\ 2x - 4x + 32 \\ 2x + 32[/tex]
5x+3y=-16
-10x-3y=11
Find the solution
Answer: x = 3.2 + 0.6y
Step-by-step explanation: Simplifying
5x + -3y = 16
Solving
5x + -3y = 16
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '3y' to each side of the equation.
5x + -3y + 3y = 16 + 3y
Combine like terms: -3y + 3y = 0
5x + 0 = 16 + 3y
5x = 16 + 3y
Divide each side by '5'.
x = 3.2 + 0.6y
Simplifying
x = 3.2 + 0.6y
decrease 475.29 by 2.1%
PLZZZZ HELP ME OUT GIVING OUT 100 POINTS PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
The diagram shows two parallel lines cut by a transversal. One angle measure is shown.
Two lines that do not intersect. A third line intersects with both lines.
Find the values of a, b, c, d, e, f, and g. Do not include any labels or degree symbols.
a=
b=
c=
d=
e=
f=
g=
Answer:
See below
Step-by-step explanation:
a + 54° = 180° [Angles on a straight line]
a = 180 - 54
a = 126°
a + b = 180 [Angles on a straight line add up to 180 degrees]
126 + b = 180
b = 180 - 126
b = 54°
c° = a° [Vertically opposite angles are equal]
c° = 126°
d = 54° [Corresponding angles are equal]
e = a [Corresponding angles are equal]
e = 126°
f = b [Corresponding angles are equal]
f = 54°
g = c [Corresponding angles]
g = 126°
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Express 0.7 as a fraction. A) 7 1 B) 1 7 C) 7 10 D) 7 100
Answer:
C) 7 10
Step-by-step explanation:
Answer:
g is your answer lolllllll
Please answer the math problem... I will mark you brainliest
Comment has been deleted
What kind of roots does a quadratic equation have if the discriminant is 0?
Answer:
If the discriminant is equal to zero, this means that the quadratic equation has two real, identical roots
answer pls 10 - 3 + 5 ÷ 5 × 4
Answer: the answer is 11
Step-by-step explanation:
Point L is located (5,-5) on the coordinate plane. Point L is reflected over y axis to create point L'. What ordered pair describes the location of L'?
Answer:
[tex](-5, -5)[/tex]
Step-by-step explanation:
To reflect a point over the y-axis is the same as flipping the sign of the x-value of the point.
So, point L reflect is [tex](-(5)), -5)=\boxed{(-5, -5)}[/tex].
A local foundation organized a lunch party for all the kids in the community. They ordered a total of 500 burger meals. They ordered plain burgers at $1.75 each cheeseburgers at $2.50 each, and chicken burgers
at $3.20 each. They ordered mostly cheeseburgers, and 100 fewer chicken burgers than plain burgers. The total order came to $1.172.50.
Define the variables and write a system of equations to represent the
situation.
9514 1404 393
Answer:
x + y + z = 5002.50x +1.75y +3.20z = 1172.500x +y -z = 100Step-by-step explanation:
Let x, y, z represent the numbers of cheeseburgers, plain burgers, and chicken burgers ordered for the party.
We have three relations given. Each can be used to write an equation.
x + y + z = 500 . . . . . . . . . a total of 500 meals were ordered
2.50x +1.75y +3.20z = 1172.50 . . . . . the total cost
0x +y -z = 100 . . . . . . . . . . 100 fewer chicken were ordered than plain
_____
Additional comment
We put the coefficient of x as 0 in the last equation to facilitate writing this system as an augmented matrix.
[tex]\left[\begin{array}{ccc|c}1&1&1&500\\2.50&1.75&3.20&1172.50\\0&1&-1&100\end{array}\right][/tex]
The solution is (x, y, z) = (300, 150, 50).
solve for b: a= a+b+c/3
Select from the drop-down menus to correctly complete the statements about the expression a8+6b .
The expression a8+6b is a
A. Sum
B. Difference
. The term a8 is an added, but it is also a
A. quotient
B. Difference
. The term 6b is an added, but it is also a
A. Sum
B. Product
Expressions are used to show relationships between variables and constants
The expression [tex]\mathbf{\frac a8 + 6b}[/tex] is a sumThe term [tex]\mathbf{\frac a8}[/tex] is a quotientThe term 6b is a product.The expression is given as:
[tex]\mathbf{\frac a8 + 6b}[/tex]
In the above expression, a/8 and 6b are added.
So, the expression [tex]\mathbf{\frac a8 + 6b}[/tex] is a sum
In [tex]\mathbf{\frac a8 }[/tex], a is divided by 8.
So, the term [tex]\mathbf{\frac a8}[/tex] is a quotient
Lastly, in 6b; 6 is multiplied by b.
So, the term 6b is a product.
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Find the sets of numbers to which
belongs.
Select all that apply.
D A. integers
B. irrational numbers
C. natural numbers
D. rational numbers
E. whole numbers
F.
real numbers
Step-by-step explanation:
a is the right answers to the same as the right
hey i need help with question 3 i put 81.5% but i’ve been told it’s been wrong ?
Please help, I need answers!
Q1
Solve for x.
7(x + 5) - 6x = 55
50
20
60
90
Q2
c−1.5+6.8=0.6
Answer in a decimal please
Answer:
[tex]Q.1)\:x=20[/tex]
[tex]Q.2)c=-4.7[/tex]
Step-by-step explanation:
[tex]Q1)[/tex] [tex]7\left(x+5\right)-6x=55[/tex]
Use the distributive property to multiply 7 by x+5 :
[tex]x+35=55[/tex]
Subtract 35 from both sides:
[tex]x+35-35=55-35[/tex]
[tex]x=20[/tex]
___________________________
[tex]Q2)[/tex] [tex]c-1.5+6.8=0.6[/tex]
[tex]-1.5+6.8=5.3[/tex]
[tex]c+5.3=0.6[/tex]
Subtract 5.3 from both sides:
[tex]c+5.3-5.3=0.6-5.3[/tex]
[tex]c=-4.7[/tex]
____________________________
solve 4 with exponent -4 without the exponent in other words
4 exponent -4 without exponent
Answer:
[tex] \frac{4}{1} \times \frac{4}{1} \times \frac{4}{1} \times \frac{4}{1} = \frac{256}{1} = - 256[/tex]
Step-by-step explanation:
I dont know if I'm right or not
but this is how I learned it
A shipping container will be used to transport several 150-kilogram crates across the
country by rail. The greatest weight that can be loaded into the container is 28000
kilograms. Other shipments weighing 10300 kilograms have already been loaded into
the container. Write and solve an inequality which can be used to determine x, the
number of 150-kilogram crates that can be loaded into the shipping container.
A shipping container will be used to transport several 150-kilogram crates across the country by rail. The greatest weight that can be loaded into the container is 24000 kilograms. Other shipments weighing 6400 kilograms have already been loaded into the container.
Answer:
[tex]x<=118[/tex]
Step-by-step explanation:
We already have [tex]10300[/tex] kilograms, we will add [tex]x*150[/tex] kilograms, and we need it to be less than or equal to [tex]28000[/tex].
So, the inequality is [tex]150x+10300<=28000[/tex].
We can subtract [tex]10300[/tex] from both sides to get [tex]150x<=17700[/tex].
We then lastly divide by [tex]150[/tex] on both sides to get [tex]x<=118[/tex].
So, the answer is [tex]\boxed{x<=118}[/tex] and we're done!
Jack works eight hours a day he is paid €6.50 per hour. He saves half of his pay how many days will he have to work to save €780?
Answer:
[tex] \frac{8x \times 6.5}{2} = 780[/tex]
[tex]8x \times 6.5 = 780 \times 2 \\ 8x \times 6.5 = 1560 \\ 52x = 1560 \\ x = 15[/tex]
Express 2700 as a product of prime numbers or find the prime factorization of 2700 leaving
your answer in index form or notation
Solve.
Ms. Holmstrom set up a math problem to find out how much money her class spends for lunches at the cafeteria for over a 2-day period. On Monday, 14 students bought lunches in the cafeteria, and 16 students bought lunches on Thursday. If lunches cost $2.50 each, how much money has Ms. Holmstrom's class spent?
Answer:
They have spent $75
16+14 = 30
30 x 2.50 = 75
Step-by-step explanation:
What is the range of g?
y
9
7+
6
5
4
3
2
1+
t
-5 -4 -32
→
8 9
1
2 3
4
5 6
7
-2
-3
-4
-5
-6
-7
Answer:
[-1,5]
Step-by-step explanation:
all reals between -1 and 5